Alfred buvall



jheing hzul to t-h,

porost, or BALTMORE, MAR YYLAND..

ct'tore Patent N 86,290, fiotel J amca'ry 26,1869.

zer sensowne ru' snjsmmrris ExoAvAiroRe.

*Ellie che'nlc refexrei `to in theseLetters Patent and making part of the same.

i To oil tchem it c'nog:

Beit known that inthe county of inventeii for Making; the some;- :mi is hii, elezir,

o' re'hreuoe therecn, tion, in whichi, Figura 1, phtte .is za engitrniimi section in eiera- `thor. ligore 2, plate i of revoiviug exezwar Figi'u'c 3, piotr, Fi fure 4-, plate :5, z excnvntinpipo, 8m. i

Figure 5, plate 2, e section of spring-swirel. Fignre o, plate 2, a seetion or' exeavoting'tiger, through the lnrgestirlitmetei'.

Figure' 7, plate 3,' plan of' dech of boot, showing heat, showing 'carriage-wziy, ropes, iiirecting-sheeves, ozrpstans, swiv els, cud pump.

Fignre 8, plate 4, e, orosssectioo of boat, through the' compcund cr intel-ml hcllo'r' ;in 1ersnl joint.

Figure 9, plate 4, o ion o? ocet, showing reu oeiviug-eheinher, pump, outi ischargetronghs or pipes', With flexibic ooupiiugs. w

o Eigure 10, plate 4,,cross-seotion of compound or internal hollow universe-i joint; i Figure 11, pls-to 4, lougituciin'al section of same. To 'enable others skilied Vin mechanice to make :md use my invcntion, 1 will procecd to deserihe the construction and operation of the-same.

I use a boot corryingo steam-engine or other motor,

' with the other applinnees for the purpose intencled, as descriled in thisjspecification.

A is :i centrifugei pump. B is a. short supply-pipe to the pump A.

O is au air-tight supply a-nd 1'eceiving-chamber,with licls. i'

'D 's en onter box or water-chamber, surronnding and rismg above the clnunher O, to be filled with water,

' hy-which the ohrimher is made air-tight.

E is a valve in the hox C, inteucled` to be' closed when chm'ging the pump A, i

F is ascreon in the ohztmber 0, for oollectiug` any pznticles too course to pziss through the (lischorges of the pump A. i

G is georing for connnnnicatng inoti'on to the sila-it H mui'o'edgingfpipe J.

lis :i ocmpouml or internal hollow universal joint, with journal-box., the construction oi' which is more fully shown by figs. 10 :nici 11, plntc 4.

' J is u'rlreflging :md supply-pipe to the ohmiiber O emi pump A.

K. is a; hollow, scctionhl excnvoting-auger, fastened ni of `ionrneiher to the pipe J, a cross-section of which is shown by g ii plate 2.

i a flange on the pipe J, against which the frietiea'hrollers M in the journal-box N revolve, as shown by s 2 and 3, plate 1.

b the pipe Jlrevolves. are pins in the journal-box N, passing through the omis of the ba-il (13,, by which the journal-box N ndpipe J' are suspended.

' .Et :tre sp1'ing -swi\'els, :is shown by figs. 4 and 5, plate 2, ettscherl to the pins P.

roilers, in a, line of the centre of the universal ;i are ciireoting-sheaves, shown on fim 7, plater. 'U is :1. douhle-eecentric oopsten, around which' the ropes V, connected with the swivelsR, and the ropes W, connected with the truck X, work, es shown by iiv.

v 7, plate 3, the mouement oifwhieh eapstgth-to-thoright, orlet,n 1o:z s the (lreiging'pipe and truck X hori-' zontolly, as desired. i

The spriug-swivels Bare intenderl togive elasticity to the wire ropes V, so as to oompenszite (when'the pipe J is raisecl or lower-ed) for the vdifference between the chord and the :irc of the rollers S, and the slig'ht unequal movement in the eccentric-cztpstan U.

Y are direeting-sheavs, over which the ropes Wv pass., 1 p

Z are plein swivels, attehed to the truck X and ropes'VsT, for tightening the same.y

A' is a, sheove iu the truck X, over which the rope B' pnsses to the capston O',`by which Athe pipe J islowered, the; capstzu'l C'ihoring a, ratchet 'and catch.

D' is aearringe-Wy, on which the truck X'traverses.

The eopstan U, as shown by the aocornpanying. drewings, is va double eccent-ric, of different diameters end dit'erent centres, so that iu its movement, either to the right ori left, it will always keep the ropesV and W tight..

' E'are discharge-troughs or pipes, eitherround, square, or any other shape, with leether or any other flexible couplings, F', which couplings are bolted to the troughs or pipes E', and to a series 'of trongh or pipes, so es to 'he oonveniently ocnneote or disconnected, aud'making sers, :mchorecl or secured ohezul, the beat is held iu position and. drawu forward in the line of excovation, ars rlesireri.

The nuger K, attsched to the end of the pipe J as it revolves, eczwntes the eu-rthy matter (lesi'ed, which, in connect-ion with the water, from the effect oi the atere frietiou-rollers in the journal-box N, within mospherio pressure, is forcerl into the pump A, and by it is (lischargel into the trough E', and from which itis conducted off, through a series of troughs 4or pipes with iiexible joints, to the point desiretL- If'diseharging' over -water for along distanee, and partieulaz'ly if the water is agitated, I use pipes With fiexihle vjoints, w supported on pontoons or lighters; and if dist'hargingA over land, I. use-pipes or open troughs. supported on' movable truoks or trestles.

lThe operation of dredging being commenced, the pipe J is movel horizontally, as desirecl, by means of p the capstan U, while it is moved vertioallgas flesired,l by means of thefeapstan G', when, ,by means of the' VVhat I claim as my invention, and (lesire to secure by Letters Patent, isi l1. The compound or internal hollow universal joint I, with a journal-box, substantially as and for tne pur- N, eonstructed with friction-rollers M, substantially as set forth,

3. In combination with the tube J, the see'tional hollow boring-head K, having Cutting-lips, formed substantially as set forth.

4. The combination of the double-ecceutric eapstan U, with tho ropes V and W, and the spring-swivels'R and' pipe J, substantially as set fortltj Witnesses: ALFR-ED DUVALL.

' SAMUEL KEEN, i

A.- LEsLm DUVALL. 

